[dpdk-stable] [dpdk-dev] [PATCH] net/mlx5: fix redundant flow after RSS expansion

[Raslan Darawsheh]

Hi,

> -----Original Message-----
> From: dev <dev-bounces at dpdk.org> On Behalf Of Xiaoyu Min
> Sent: Tuesday, March 30, 2021 4:41 PM
> To: Matan Azrad <matan at nvidia.com>; Shahaf Shuler
> <shahafs at nvidia.com>; Slava Ovsiienko <viacheslavo at nvidia.com>; Jack Min
> <jackmin at nvidia.com>; Ori Kam <orika at nvidia.com>
> Cc: dev at dpdk.org; stable at dpdk.org
> Subject: [dpdk-dev] [PATCH] net/mlx5: fix redundant flow after RSS
> expansion
> 
> When RSS expand, if there is no expansion happened but completion
> happened
> because user only input next protocol field instead of item
> i.e, ether type == 0x8100 instead of VLAN, an extra flow is created with
> missing item in order to filter traffic strictly.
> 
> However, after [1] and [2] the rte_flow_item_eth itself is enough to
> filter out VLAN traffic, the VLAN item is not needed.
> 
> This redundant flow will cause faiure in some scenarios on group 0 due
> to they are the same FTE.
> 
> Fixes: fc2dd8dd492f ("ethdev: fix expand RSS flows")
> Cc: stable at dpdk.org
> 
> [1]:
> commit 09315fc83861 ("ethdev: add VLAN attributes to ethernet and
> VLAN items")
> 
> [2]:
> commit 86b59a1af671 ("net/mlx5: support VLAN matching fields")
> 
> Signed-off-by: Xiaoyu Min <jackmin at nvidia.com>
> ---

Patch applied to next-net-mlx,

Kindest regards,
Raslan Darawsheh